Bluefinned tuna

Acrolein has been detected in effluent water streams from industrial and municipal sources. Municipal effluents from Dayton, Ohio, for example, contained between 20 and 200 pg acrolein/L in 6 of 11 analyzed samples (USEPA 1980 Beauchamp et al. 1985). Acrolein is also a component of many foods, and processing may increase the acrolein content (USEPA 1980). Acrolein has been identified in raw turkey, potatoes, onions, coffee grounds, raw cocoa beans, alcoholic beverages, hops (USEPA 1980), white bread, sugarcane molasses, souring salted pork, and cooked bluefin tuna (Thunnus thynnus) (Beauchamp et al. 1985). 

Hellou J, Fancey LL, Payne JF. 1992a. Concentrations of twenty-four elements in bluefin tuna, thunnus thynnus from the Northwest Atlantic. Chemosphere 24 211-218. 

In the last decade the ecosystems of the Black Sea sustained disastrous changes due to the appearance and mass propagation of jellyfish (Mnemiop-sis leidy). This species was first found in the Black Sea not far from the southeastern coast of Crimea in 1982 and the basis for its appearance was prepared by man. Overfishing and eutrophication led to the disappearance of higher predatory fish and animals, such as turbot, bluefin tuna and monk seal. A sharply reduced population of plankton-eating fish cleared a niche for jellyfish [2], By mid-1980 the jellyfish resource had reached 1 billion tons. 

Storelli, M.M., Marcotrigiano, G.O. Total mercury levels in muscle tissue of swordfish (Xiphias gladius) and bluefin tuna (Thunnus thynnus) from the Mediterranean Sea (Italy). J. Food Prot. 64, 1058-1061 (2001)... 

WE HAD ARRIVED IN MARSH Harbour the day before for what was to be a boys-only portion of my dad s 70th birthday celebration. When we checked into the Abaco Beach Resort Boat Harbour, Tim noticed a photo pinned to the message board. We must be at the right place, he said. It was a shot of a 900-pound bluefin tuna caught during a fishing tournament earher in the summer — one of six big-time tourneys hosted by the resort each year. 

A new risk framework for predicting chemical residue(s)—preliminary research for PCBs and PCDD/Fs in farmed Australian Southern Bluefin Tuna (Thunnus maccoyli)... 

Elephant seals, bluefin tuna, white sharks... 

SAWADA Y, OKADA T, MiYASHiTA s, MURATA 0 and KUMAi H (2005) Completion of the Pacific bluefin tuna Thunnus orientalis (Temminck et Schlegel) life cycle, Aquaculture Research, vol. 36, pp. 413-421. 

Fig. 15.3 Preparation of GnRHa implants and implantation of captive-reared bluefin tuna, (a) The two GnRHa implants (im) were attached to a polyethylene arrowhead (A) via a 0.5 mm nylon monofilament, followed by 10 mm reporter-spacer (sp), a 10-15 cm pink tag (tag), and a three colour individual identification code (cod), (b) In the second year experiment (2005), a modification was made to the implant assembly with the addition of a metal, conical leader (C) and disc stopper (D) around the implants (im), in order to prevent them from rubbing against the skin and muscle block of the fish during insertion, and being pushed over the tubing, (c) The arrowhead was fitted to a specially prepared spear and was administered to the fish using a spear gun. (d) The implant was administered at the posterior part of the tail (arrows) and the success of the implantation procedure was first evaluated by the diver, after visually examining if the reporter-spacer was inside the fish (Mylonas et at., 2007). Reprinted with permission from Taylor and...

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